Question

How the resistance of a substance changes with the length of the substance

Answer 1

Answer:

linearly

Explanation:

We know that, R = ρ $\frac{l}{A}$

where, r = resistance

ρ = resistivity

l = length of the wire

A = area of cross section of wire

Hence, we can see that R α l [R is directly or linearly proportional to l]

R1/R2 = l1/l2

Hope it helps

Please mark as brainliest